— I wonder how much you charge for your services．— The first two are free ____

题型：江西省模拟题难度：来源：

— I wonder how much you charge for your services．
— The first two are free ____  the third costs $30．[      ]
A. while
B. until
C. when
D. before

答案

举一反三

He had hardly finished his meal ________ a familiar voice came to his ears.[ ]
A. why
B. where
C. when
D. while

题型：同步题难度：| 查看答案

I had just got up and was about to cook my breakfast _____ the telephone rang loudly, but it hung
up _____ I could answer it.  [     ]
A. when; before
B. while; before
C. when; until
D. as; after

题型：专项题难度：| 查看答案

They were walking along the shore ________ a huge wave appeared out of nowhere, sweeping
them out to sea.[     ]
A. as
B. while
C. when
D. though

题型：专项题难度：| 查看答案

-Are you good at either math ________ physics?
-I"m not good at math, ________ do I do well in physics.[     ]
A．or; or
B．nor; nor
C．nor; or
D．or; nor

题型：同步题难度：| 查看答案

Make full use of your time________you can achieve what you desire.[     ]
A. so
B. or
C. but
D. and

题型：陕西省同步题难度：| 查看答案